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Composite Material Including Organic Compound and Inorganic Compound, Light-Emitting Element and Light-Emitting Device Using the Composite Compound, and Manufacturing Method of the Light-Emitting Element

a technology of organic compound and inorganic compound, which is applied in the direction of non-metal conductors, conductors, thermoelectric devices, etc., can solve the problems of increasing the driving voltage, increasing the power consumption, and increasing the power consumption

Inactive Publication Date: 2013-10-24
SEO SATOSHI +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a method for manufacturing a light-emitting element using different layers. The first and fourth layers can be made using metal hydroxide or metal alkoxide, which prevents precipitation and makes the reaction easier for forming oxide without hydrolysis. The solution used in the process can also contain a binder substance such as polyvinyl alcohol, polymethyl methacrylate, polycarbonate, or a phenol resin. The organic compound used in the process should have an arylamine skeleton or any one of the high molecular weight compounds described above. The manufacturing method according to the present invention forms a metal oxide with strong electron- accepting properties, which can be a transition metal such as titanium, vanadium, molybdenum, tungsten, rhenium, or ruthenium. This method allows for the efficient production of light-emitting elements.

Problems solved by technology

Further, since sufficient luminescence can be obtained at a direct-current voltage of several to several tens of volts, the power consumption is relatively low.
For example, when such light-emitting elements are applied to mobile devices and the like, power consumption needs to be low, and thus, further decrease in driving voltage becomes necessary.
The vacuum evaporation method is not suitable for mass-production, since it is difficult to respond to increase in substrate size.
However, a highly acidic compound is used as an electron accepting compound, and thus, there is a problem such as corrosion of an electrode.
Further, the antimony compound used in References 2 and 3 is highly toxic.
Therefore, there are tears of the antimony compound having adverse affects on the environment or on human body, and thus, it is not suitable for industrial use.

Method used

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  • Composite Material Including Organic Compound and Inorganic Compound, Light-Emitting Element and Light-Emitting Device Using the Composite Compound, and Manufacturing Method of the Light-Emitting Element
  • Composite Material Including Organic Compound and Inorganic Compound, Light-Emitting Element and Light-Emitting Device Using the Composite Compound, and Manufacturing Method of the Light-Emitting Element
  • Composite Material Including Organic Compound and Inorganic Compound, Light-Emitting Element and Light-Emitting Device Using the Composite Compound, and Manufacturing Method of the Light-Emitting Element

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embodiment mode 1

[0147]A composite material of the present invention will be described. The composite material is a material inducing an organic compound and an inorganic compound in combination.

[0148]The conductivity of a composite material of the present invention is increased by generating an interaction between an organic compound and an inorganic compound to generate carriers. This embodiment mode describes a case that electrons are generated as carriers.

[0149]A composite material for generating electrons is a composite material including an organic compound and an inorganic compound showing an electron donating property to the organic compound. By adopting this combination, electrons move into the organic compound from the inorganic compound, thereby generating electrons as carriers. As a result of the generated electrons, high conductivity can be obtained.

[0150]As an organic compound of the present invention, which is used for a composite material generating electrons, a material that is supe...

embodiment mode 2

[0155]Embodiment Mode 2 will describe a manufacturing method of a composite material generating electrons, shown in Embodiment Mode 1.

[0156]A metal alkoxide is used as a component for forming an inorganic compound. As described in Embodiment Mode 1, an oxide including an alkali metal or an alkaline earth metal is preferably used as the inorganic compound. As the metal, an alkali metal or an alkaline earth metal is preferable, specifically, lithium, calcium or barium is preferred. Note that in the case of using a composite oxide as an inorganic compound, another metal alkoxide may be added. In other words, in a case that a composite oxide including an aluminum oxide skeleton, for example, is used, an aluminum alkoxide such as aluminum triisopropoxide may additionally be added.

[0157]A sol is prepared by adding water and a chelating agent such as β-diketon as a stabilizer, into a solution in which a metal alkoxide is dissolved in a proper solvent. As the solvent, for example, tetrahydr...

embodiment mode 3

[0161]Embodiment Mode 3 will describe a method of forming a composite material generating electrons, as a film, by another method, which is different from that in Embodiment Mode 2.

[0162]A metal alkoxide is used as a component for forming an inorganic compound. As described in Embodiment Mode 1, an oxide including an alkali metal or an alkaline earth metal is preferably used. As the metal, an alkali metal or an alkaline earth metal is preferable, specifically, lithium, calcium or barium is preferred. Note that in a case of using a composite oxide as an inorganic compound, another metal alkoxide may be added. In other words, in a case that a composite oxide including an aluminum oxide skeleton, for example, is used, an aluminum alkoxide such as aluminum triisopropoxide may additionally be added.

[0163]A first solution including a metal alkoxide and an organic compound is obtained by dissolving the metal alkoxide and the organic compound in a proper solvent, and stirring it. As the sol...

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Abstract

The present invention provides a composite material having high conductivity, a light-emitting element and a light-emitting device using the composite material. Further, the present invention provides a manufacturing method of a light-emitting element which is suitable for mass production. A light-emitting element of the present invention includes a layer including a luminescent substance between a pair of electrodes. The layer including a luminescent substance has a composite material which includes an organic compound, and an inorganic compound showing an electron donating property to the organic compound. Since the light-emitting element of the present invention includes a composite material made by combining an organic compound and an inorganic compound, the carrier injecting property, carrier transporting property, and conductivity thereof are excellent, and thus, the driving voltage can be reduced.

Description

TECHNICAL FIELD[0001]The present invention relates to a composite material including an organic compound and an inorganic compound. Further, the present invention relates to a light-emitting element having a layer including a luminescent substance between a pair of electrodes, and a manufacturing method thereof. Moreover, the present invention relates to a light-emitting device using a light-emitting element.BACKGROUND ART[0002]A light-emitting element using a light-emitting material has features of thinness, lightness in weight, high response speed, low direct-current voltage drive, and the like, and is expected to be applied to the next-generation flat panel displays. A light-emitting device in which light-emitting elements are arranged in matrix is said to have superiority in wide viewing angle and high visibility as compared with conventional liquid crystal display devices.[0003]A basic structure of a light-emitting element is a structure in which a layer containing a light-emit...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01L51/00H01B1/12H10K99/00
CPCH01L51/0035H01B1/12H01B1/127C09J133/10H10K85/141H10K85/146H10K85/151H10K85/649H10K50/155H10K50/165H10K50/11H10K2102/3026C09K11/00H10K85/111
Inventor SEO, SATOSHISHITAGAKI, SATOKOABE, HIROKOTAKASU, TAKAKONOMURA, RYOJI
Owner SEO SATOSHI